How to Propagate Peperomia incana Plant

Hello! After having this plant 14 years I have finally identified it! Lately I’ve looked at it and wondered if it can be more full, more stems, more leaves! And alas!, the photos I’m finding are of much prettier plants! Mine has become long and spindly and boring! Can you please tell me the best way to cut it down and root the cuttings?
Thanks!!
Malenia
(FYI-The yellow round thing in the pot is a plastic mushroom (smurf house) my 4yo put in the plant. And the green thing is a glass watering bulb that’s been empty for months)